Event: Summer League Division 1

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Opponent Rating Result
Joseph B Bradey 1910 1 - 0
Chris Bailey 1627 0 - 1
Tom Key 1648 ½ - ½
Joseph B Bradey 1910 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1674 = (7095 + 400 * (1 - 2)) / 4)

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